Paper-feeding roll



April as, 192? \IV. S. BRONANDER PAPER FEEDING ROLL Filed April '7, 1926 ATTOR Patented Apr. 26, 1927.

WILHELM B. BRONANDER, F MONTCLAIR, NEW JERSEY, ASSIGNOR '10 AMERICAN MACHINE & FOUNDRY COMPANY, A CORPORATION OF NEW JERSEY.

rarpa'rnnnine ROLL.

Application filed April 7,

This invention relates to an improvement in a paper feeding roll .for successively feeding sheets of paper from a pack. Y

Paper feeding rolls'for this purpose are known and used in machines of many different types for many different purposes, I but, in many instances, they occasionally fail to properly feed the sheets from the pack, with the result that the normal operation of the machine is interrupted and ma chine stoppage becomes necessary in order to remove the cause of the difficulty. It has now been discovered that this difiiculty can be overcome by a. change in the construction and operation of such rolls, and the main object of the present invention is the prod uction of a roll embodying these changes which properly feeds'the sheets from the pack irrespective of the number of sheets therein,

and without interruption of the operation of the machine in connection with which it is used, thus eliminating the economic losses heretofore encountered which far outweigh the higher cost of the roll. With this and other objects not specifically mentioned in view, the invention consists in certain constructions and combinations of elements which will be hereinafter fully described and then specifically set forth in the claims hereunto appended. In the accompanying drawings, in which like characters of reference indicate the same or like parts, Fig. 1 is a sectional elevation ofa roll constructed in accordance with the invention; Fig. 2 is a side cross-sectional elevation of the structure shown in Fig. 1; and Fig. 3 is a detail cross-section of one of the sheet feeding members used in the structure shown in Figs. 1 and 2.

In carrying the invention into effect, there is provided a rotating shaft, means carried and rotated by said shaft and intermittently engaging a pack of sheets of aper to suecessively feed sheets from said pack, and means also carried by said shaft in constant engagement with said pack, there being always a tendency for said second means to feed a sheet from said pack, this tendency bein overcome b the frictional engagement of the sheet to e fed with the remainder of the pack until the first means comes into action and overcomes the resistance of this frictional engagement. In the best constructions contemplated, the two means are alternately arranged-on the shaft, the number wall 13and floor -14 of themagazine, its

stant tendency of the outer ball races to feed 1926. Serial No. 100,262.

being dependent upon the width'of the sheets to be fed. These means may be varied in construction within the scope of the claims, for the specific structure selected to illustrate the invention is but one of numerous possibleconcrete embodiments of the same. The invention, therefore, is not to be restricted to' the precise details of the structure shown and described.

.Referring to the drawings, 4 indicates a rotating shaft deriving its motion from one of the driving shafts of the machine in connection with which the roll is used. Fast on the shaft 4 are a number of drums 5, s ajced apart and each having oppositelydisposed flattened surfaces 6. To these flattened surfaces are clamped the ends of a rubber pad 7, by means of the clamps 8 secured to the drums by screws 9; As the shaft 4 rotates, the pads '7 are caused to intermittently engage the pack of sheets, marked P, and to successively feed sheets therefrom.

Alternately arranged with the drums 5, along the shaft 4, are ball bearings 10, the inner races of which are pressed on the shaft to rotate with it, while their outer races 11 are in constant engagement with the pack and rotate only when the sheet fed out by the pads 7 is moving.

For the purpose of Sn porting the pack of sheets, there is provide a vertical magazine 12 in which the sheets are stacked one above another; and this magazine is rovided with a. front wall 13 the lower en of which is spaced from the magazine floor 14 a suflicient distance to permit the passage between the two of a single sheet only as it is fed out by the pads As he sheet passes out between thefront leading edge may be caught by means such as feed rolls which com lete the operation of withdrawing the sheet from the pack. Such feed rolls are of well known construction and operation and form no part of the present invention. For this reason, description and illustration of the same is omitted in the interest of brevity and clearness.

As hereinbefore intimated, there is a conout a sheet from the pack, but this tendency is overcome by the frictional engagement of the lowermost sheet with the pack resting on it so lon as the pads 7 are out of contact with sai lowermost sheet; and during this,

period the outer-racesll stand still. When the pads-7 come into engagement with the lowermost sheet, however, their frictional engagement therewith overcomes the frictional resistance of the pack thereon, and the sheet moves out from under the pack. During this period, the outer races 11 of the ball bearings move along with the shet and older feed rolls would ordinarily feed out a sheet once started, though they sometimes failedto start it. What is claimed is:

1. A roll for successively feeding sheets of paper from a pack, comprising ajrotating shaft, means carried and rotated by said shaft and intermittently engaging said pack to successively feed sheets therefrom, and ballbearings carried by said shaft with their outer races in constant engagement with said pack and constantly exerting a slight feeding strain on the sheet to be fed out.

2. A roll for successively feeding sheets of paper from a pack, comprising a rotating shaft, means carried and rotated by said shaft including supporting means fast on the said shaft and sheet engaging means fast on said supporting means and intermittently strain on the sheet to be fed out.

3. A roll for successively feeding sheets of paper from a pack, comprising a rotating shaft, supporting drums having flattened surfaces and carried and rotated by said shaft, rubber pads-carried by said drums and clamped to said surfaces and intermittently engaging said pack to successively feed sheets therefrom, and means carried by said shaft in constant engagement with said pack and constantly exerting a slight feedmg strain on the sheet to be fed out.

4. A roll for successively feeding sheets of paper from a pack, comprising a rotating shaft, supporting drums having flattened surfaces and carried and rotated by said shaft, rubber pads carried by said drums and clamped to said surfaces and intermittently engaging said pack tov successively feed sheets therefrom, and ball bearings carried by said shaft with their outer races in constant engagement with said ack and constantly exerting aslight fee ing strain on the sheet to be fed out, said pads and bearin s being alternately arranged on said shaft.

11 testimony whereof, I have signed my name to this I Ecification.

YVIL LM B.- BRONANDER. 

